KR20130102033A - Color conversion filter - Google Patents

Abstract

The color conversion filter of the present invention includes at least one squarylium pigment that emits fluorescence, and has a wavelength converting ability, absorbs light in an unnecessary wavelength region, emits fluorescence in a preferred wavelength region, and lowers luminance. Since it does not make it suitable for a color conversion light emitting device, a photoelectric conversion device, etc., it is suitable. The color conversion filter of the present invention is particularly suitable for use as a color conversion filter having high intensity absorption in the range of 570 to 600 nm and emitting fluorescence having high intensity in the range of 600 to 780 nm.

Description

Color conversion filter {COLOR CONVERSION FILTER}

The present invention relates to a color conversion filter comprising a squarylium pigment emitting fluorescence and having a wavelength conversion capability. The color conversion filter is a color conversion filter capable of high definition, high brightness, high efficiency multicolor display, and is excellent in productivity. The color conversion filter of the present invention is used for displays such as liquid crystals, PDPs, organic ELs, image sensors, personal computers, word processors, audio, video, car navigation systems, telephones, mobile terminals, display devices for industrial instruments, and photoelectrics such as solar cells. It is useful for conversion element, fluorescent lamp, LED, EL illumination, etc., dye laser, copy prevention, etc.

Compounds having absorption in the visible light region are optical for image display devices such as liquid crystal displays (LCDs), plasma display panels (PDPs), electroluminescent displays (ELDs), cathode ray tube displays (CRTs), fluorescent display tubes, and field emission displays. It is used as an optical element in filters.

On the other hand, conventionally, a material that absorbs energy and emits electromagnetic waves as extra energy when the excited electrons return to the ground state has a wavelength converting ability due to the energy difference between absorption and emission. Wavelength conversion dyes), which are used in dyes, pigments, optical filters, agricultural films, and the like, and have been actively studied for organic compounds because their absorption and emission wavelengths are easier to control than inorganic compounds. In particular, a compound that emits absorbed energy as fluorescence is called a fluorescent dye, and it is highly practical to emit fluorescence of visible light, for example, a display device such as a display, an illumination device such as a fluorescent lamp, and a marker in biology and medicine. Can be used as

In general, lighting devices (such as home white lighting) require good lighting with excellent color rendition (white that looks more natural), and in order to obtain excellent color rendering, it is considered good to mix RGB three primary colors. Obtaining light emission has become a problem. In particular, a combination of a blue LED and a yellow phosphor is generally used in LED lighting, and attempts have been made to replace yellow phosphors with red and green phosphors in order to improve color rendering, but there is a problem that they are expensive and have low energy efficiency. In addition, when red and green phosphors are used, only yellow is absorbed from fluorescence to improve color rendering properties. However, absorbing yellow color is not sufficient because the luminance of illumination is lowered.

Patent documents 1-6 show the squarylium compound and the optical filter using the said compound. In addition, Patent Document 7 discloses a photoelectric conversion device (solar cell module) using a color conversion material.

Japanese Unexamined Patent Publication No. 2002-363434 United States Patent Application Publication No. 2004/197705 US Patent Application Publication No. 2008/207918 Japanese Unexamined Patent Publication No. 2007-199421 Japanese Unexamined Patent Publication No. 2008-250022 International Publication No. 2006/35555 Japanese Unexamined Patent Publication No. 2006-303033

Accordingly, an object of the present invention is to provide a color conversion filter that emits fluorescence, and also a wavelength for absorbing 570-650 nm (especially yellow light (570-600 nm)) and emitting fluorescence of orange-red (600-780 nm). An object of the present invention is to provide a color conversion filter having a conversion capability. Still another object of the present invention is to provide a color conversion light emitting device and a photoelectric conversion device using the color conversion filter.

MEANS TO SOLVE THE PROBLEM As a result of earnestly examining, the present inventors discovered for the first time the use of the squarylium pigment | dye which radiates a fluorescence as a wavelength conversion material, and the color which has wavelength conversion ability containing at least 1 type of said squarylium pigment | dye. It has been found that the conversion filter has a desirable light conversion capability in the wavelength range, and by using this, the above object can be achieved.

This invention is made | formed based on the said discovery, Comprising: It is providing the color conversion filter which has at least 1 type of squarylium pigment | dye which emits fluorescence, and has wavelength conversion ability.

Moreover, this invention provides the said color conversion filter whose said squarylium pigment | dye is a compound represented by following General formula (1), (2) or (3).

(In formula, A represents group chosen from (a)-(k) of following group I, A 'represents group chosen from (a')-(k ') of following group II.)

In the formula, Ring B and Ring B 'represent a benzene ring, a naphthalene ring, a phenanthrene ring or a pyridine ring,

R ¹ and R ^{1 '} are a halogen atom, a nitro group, a cyano group, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, an alkyl group having 1 to 8 carbon atoms, a halogen substituted alkyl group having 1 to 8 carbon atoms , An alkoxy group having 1 to 8 carbon atoms, a halogen substituted alkoxy group having 1 to 8 carbon atoms, or an ether group having 2 to 8 carbon atoms,

R ² and R ^{2 '} represent a hydrogen atom, a halogen atom, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, or an alkyl group having 1 to 8 carbon atoms,

R ³ to R ⁹ and R ^{3 '} to R ^9' represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms or a group forming a condensed ring with an adjacent substituent,

X and X 'represent an oxygen atom, a sulfur atom, a selenium atom, -CR ⁵¹ R ^52- , a cycloalkane-1,1-diyl group having 3 to 6 carbon atoms, -NH- or -NY ^2- ,

R ⁵¹ and R ⁵² represent an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms or an arylalkyl group having 7 to 30 carbon atoms, or a hydrogen atom which may be substituted with a hydroxyl group, a halogen atom, a cyano group or a nitro group ,

Y, Y 'and Y ² are a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms or an aryl having 7 to 30 carbon atoms which may be substituted with a hydroxyl group, a halogen atom, a cyano group or a nitro group. An alkyl group, and the methylene group in the alkyl group and the arylalkyl group in Y, Y 'and Y ² is -O-, -S-, -CO-, -COO-, -OCO-, -SO _2- , -NH-,- May be substituted with CONH-, -NHCO-, -N = CH- or -CH = CH-,

r and r 'represent the number which can be substituted in 0 or (a)-(k) or (a')-(k ').)

Moreover, this invention provides the color conversion light emitting device containing a light emitting part and the said color conversion filter.

The present invention also provides the color conversion light emitting device, wherein the light emitting portion is an LED element.

Moreover, this invention provides a photoelectric conversion element and the photoelectric conversion device containing the said color conversion filter.

The color conversion filter of the present invention comprising at least one squarylium compound that emits fluorescence absorbs light in an unnecessary wavelength range, emits fluorescence in a desired wavelength range, and does not lower luminance, so that the color conversion light emitting device, Suitable for photoelectric conversion devices and the like.

It is sectional drawing which shows one preferable embodiment of the color conversion filter of this invention.
1B is a cross-sectional view showing another preferred embodiment of the color conversion filter of the present invention.
1C is a cross-sectional view showing still another preferred embodiment of the color conversion filter of the present invention.
It is a schematic sectional drawing which shows one preferable embodiment of the ballistic type | mold LED device which is an example of the color conversion light emitting device using the color conversion filter of this invention.
2B is a schematic cross-sectional view showing another preferred embodiment of the ballistic type LED device that is an example of a color conversion light emitting device using the color conversion filter of the present invention.
2C is a schematic cross-sectional view showing yet another preferred embodiment of a ballistic type LED device that is an example of a color conversion light emitting device using the color conversion filter of the present invention.
It is sectional drawing which shows one preferable embodiment of the color conversion light emitting device which arranged LED chip which is an example of the color conversion light emitting device using the color conversion filter of this invention.
Fig. 2E is a cross-sectional view showing another preferred embodiment of the color conversion light emitting device in which the LED chips as an example of the color conversion light emitting device using the color conversion filter of the present invention are listed.
Fig. 2F is a cross-sectional view showing yet another preferred embodiment of the color conversion light emitting device in which the LED chips as examples of the color conversion light emitting device using the color conversion filter of the present invention are listed.
3 is a schematic cross-sectional view showing another preferred embodiment of the color conversion light emitting device using the color conversion filter of the present invention.
It is a schematic sectional drawing which shows one preferable embodiment of the photoelectric conversion device using the color conversion filter of this invention.

EMBODIMENT OF THE INVENTION Hereinafter, the color conversion filter, color conversion light emitting device, and photoelectric conversion device of this invention are demonstrated in detail based on preferable embodiment.

First, the squarylium compound used for the color conversion filter of this invention is demonstrated.

Although the squarylium compound has been used for an optical filter etc. previously, it has been used only as an effect which absorbs specific wavelength light. In the present invention, a squarylium compound is first discovered to emit fluorescence, absorbs specific wavelength light, and has a function of emitting as fluorescence to a desired wavelength light, thereby converting color by an effect different from the known effects. The function which improves the quality of a light emitting device or a photoelectric conversion device is exhibited.

The color conversion filter of the present invention, which includes at least one squarylium compound that emits fluorescence and has a wavelength converting ability, has a high intensity absorption in the range of 570 to 600 nm, and has a high intensity in the range of 600 to 780 nm. It is suitable for use as a color conversion filter that emits light. By selectively absorbing visible light and converting it into longer wavelengths, it is possible to obtain excellent color rendering properties without lowering the luminance.

Among the squarylium compounds which emit fluorescence, the compounds represented by the general formulas (1), (2) or (3) can be preferably used because of their high fluorescence intensity.

On the other hand, as two A in the said General formula (1), and A and A 'in General formula (2) and (3), one nonionic group and one cationic group are selected so that an electric charge may be neutral as a compound. do.

Examples of the halogen atoms represented by R ¹ and R ^{1 ′} in General Formulas (1), (2) and (3) include fluorine, chlorine and iodine,

Examples of the aryl group having 6 to 30 carbon atoms include phenyl, naphthyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, 4-vinylphenyl, 3-iso-propylphenyl, 4-iso-propylphenyl, 4-butylphenyl, 4-iso-butylphenyl, 4-tert-butylphenyl, 4-hexylphenyl, 4-cyclohexylphenyl, 4-octylphenyl, 4- (2-ethylhexyl) phenyl, 4-stearylphenyl, 2,3- Dimethylphenyl, 2,4-dimethylphenyl, 2,5-dimethylphenyl, 2,6-dimethylphenyl, 3,4-dimethylphenyl, 3,5-dimethylphenyl, 2,4-di-tert-butylphenyl, 2 , 5-di-tert-butylphenyl, 2,6-di-tert-butylphenyl, 2,4-di-tert-pentylphenyl, 2,5-di-tert-amylphenyl, 2,5-di-tert -Octylphenyl, 2,4-dicumylphenyl, 4-cyclohexylphenyl, (1,1'-biphenyl) -4-yl, 2,4,5-trimethylphenyl, etc. are mentioned,

Examples of the arylalkyl group having 7 to 30 carbon atoms include benzyl, phenethyl, 2-phenylpropan-2-yl, diphenylmethyl, triphenylmethyl, styryl, cinnamil, 2- (4'-isobutylphenyl) ethyl, and the like. Can be

Alkyl groups having 1 to 8 carbon atoms include methyl, ethyl, propyl, iso-propyl, butyl, sec-butyl, tert-butyl, iso-butyl, amyl, iso-amyl, tert-amyl, hexyl, 2-hexyl, 3 -Hexyl, cyclohexyl, 1-methylcyclohexyl, heptyl, 2-heptyl, 3-heptyl, iso-heptyl, tert-heptyl, 1-octyl, iso-octyl, tert-octyl, and the like.

Halogen-substituted alkyl groups having 1 to 8 carbon atoms include those in which at least one hydrogen atom of an alkyl group is substituted with a halogen atom, for example, chloromethyl, dichloromethyl, trichloromethyl, fluoromethyl, difluoromethyl, trifluoromethyl And nonafluorobutyl etc. are mentioned,

Examples of the alkoxy group having 1 to 8 carbon atoms include methyloxy, ethyloxy, iso-propyloxy, propyloxy, butyloxy, pentyloxy, iso-pentyloxy, hexyloxy, heptyloxy, octyloxy and 2-ethylhexyloxy Etc.,

As a halogen substituted alkoxy group having 1 to 8 carbon atoms, at least one hydrogen atom of these alkoxy groups is substituted with a halogen atom, for example, chloromethyloxy, dichloromethyloxy, trichloromethyloxy, fluoromethyloxy, difluoro Methyloxy, trifluoromethyloxy, nonafluorobutyloxy, and the like,

Examples of the ethyl group having 2 to 8 carbon atoms include an alkoxyalkyl group having 2 to 8 carbon atoms, and specifically, 2-methoxyethyl, 2- (2-methoxy) ethoxyethyl, 2-ethoxyethyl, 2-butoxyethyl, 4-methoxybutyl, 3-methoxybutyl, etc. are mentioned.

Halogen atoms represented by R ² and R ^{2 ′} in General Formulas (1), (2) and (3), an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, and 1 to 8 carbon atoms Examples of the alkyl group include the groups exemplified in the description of R ¹ .

Examples of the halogen atoms and alkyl groups having 1 to 8 carbon atoms represented by R ³ to R ⁹ and R ^{3 '} to R ^9' in the general formulas (1), (2) and (3) are exemplified in the description of R ¹ . One flag,

Condensed rings composed of groups forming condensed rings with adjacent substituents include aromatics such as benzene rings, naphthalene rings, chlorobenzene rings, bromobenzene rings, methylbenzene rings, ethylbenzene rings, methoxybenzene rings, and ethoxybenzene rings. ring; Oxazole ring, benzoxazole ring, isoxazole ring, naphthooxazole ring, indolenin ring, benzoindolen ring, naphthoindolenin ring, imidazole ring, benzoimidazole ring, naphthoimidazole ring, furan ring, benzofuran Heterocycles such as ring, naphthofuran ring, pyrrole ring, indolidine ring, indole ring, quinoline ring, quinoxaline ring, imidazoquinoxaline ring, thiazole ring, benzothiazole ring and naphtothiazole ring; And aliphatic rings such as cyclopropane ring, cyclobutane ring, cyclopentane ring, cyclohexane ring, cycloheptane ring and cyclooctane ring.

As the cycloalkane-1,1-diyl group having 3 to 6 carbon atoms represented by X and X 'in the general formulas (1), (2) and (3), cyclopropane-1,1-diyl and cyclobutane -1,1-diyl, 2,4-dimethylcyclobutane-1,1-diyl, 3,3-dimethylcyclobutane-1,1-diyl, cyclopentane-1,1-diyl, cyclohexane-1,1 -Diyle, etc.

Examples of the alkyl group having 1 to 20 carbon atoms represented by R ⁵¹ and R ⁵² in X and X 'include methyl, ethyl, propyl, iso-propyl, butyl, sec-butyl, tert-butyl, iso-butyl, amyl and iso- Amyl, tert-amyl, hexyl, 2-hexyl, 3-hexyl, cyclohexyl, 1-methylcyclohexyl, heptyl, 2-heptyl, 3-heptyl, iso-heptyl, tert-heptyl, 1-octyl, iso-octyl , tert-octyl, 2-ethylhexyl, nonyl, iso-nonyl, decyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, and the like. A hydroxyl group, a halogen atom, a cyano group or a nitro group may be substituted with any number.

Examples of the aryl group having 6 to 30 carbon atoms represented by R ⁵¹ and R ⁵² in the general formulas (1), (2) and (3) include the groups exemplified in the description of R ¹ , and hydrogen of these aryl groups. An atom may be substituted by arbitrary numbers with a hydroxyl group, a halogen atom, a cyano group, or a nitro group.

Examples of the arylalkyl group having 7 to 30 carbon atoms represented by R ⁵¹ and R ⁵² in the general formulas (1), (2) and (3) include the groups exemplified in the description of R ¹ . The hydrogen atom may be substituted with any number of hydroxyl group, halogen atom, cyano group or nitro group.

An alkyl group having 1 to 20 carbon atoms which may be substituted with a hydroxyl group, a halogen atom, a cyano group or a nitro group represented by Y, Y 'and Y ² in the general formulas (1), (2) and (3); Aryl groups having 6 to 30 carbon atoms which may be substituted with hydroxyl, halogen, cyano or nitro groups; Alternatively, examples of the arylalkyl group having 7 to 30 carbon atoms which may be substituted with a hydroxyl group, a halogen atom, a cyano group or a nitro group include the groups exemplified in the description of R ⁵¹ and R ⁵² .

The alkyl groups in these Y, Y ', Y ² , aryl groups and methylene groups in the arylalkyl groups are -O-, -S-, -CO-, -COO-, -OCO-, -SO _2- , -NH-, -CONH -, -NHCO-, -N = CH- or -CH = CH- may be substituted. For example methyl, ethyl, propyl, iso-propyl, butyl, sec-butyl, tert-butyl, iso-butyl, amyl, iso-amyl, tert-amyl, hexyl, 2-hexyl, 3-hexyl, cyclohexyl, 1-methylcyclohexyl, heptyl, 2-heptyl, 3-heptyl, iso-heptyl, tert-heptyl, 1-octyl, iso-octyl, tert-octyl, 2-ethylhexyl, nonyl, iso-nonyl, decyl, dodec Alkyl groups such as yarn, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, and octadecyl; Phenyl, naphthyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, 4-vinylphenyl, 3-iso-propylphenyl, 4-iso-propylphenyl, 4-butylphenyl, 4-iso-butylphenyl, 4- tert-butylphenyl, 4-hexylphenyl, 4-cyclohexylphenyl, 4-octylphenyl, 4- (2-ethylhexyl) phenyl, 4-stearylphenyl, 2,3-dimethylphenyl, 2,4-dimethylphenyl Aryl groups such as 2,5-dimethylphenyl, 2,6-dimethylphenyl, 3,4-dimethylphenyl, 3,5-dimethylphenyl, 2,4-di-tert-butylphenyl and cyclohexylphenyl; Arylalkyl groups such as benzyl, phenethyl, 2-phenylpropan-2-yl, diphenylmethyl, triphenylmethyl, styryl, cinnamil, 2- (4'-isobutylphenyl) ethyl, and the like. Substituted by a bond or the like, for example, 2-methoxyethyl, 3-methoxypropyl, 4-methoxybutyl, 2-butoxyethyl, methoxyethoxyethyl, methoxyethoxyethoxyethyl, 3- Methoxybutyl, 2-phenoxyethyl, 3-phenoxypropyl, 2-methylthioethyl, 2-phenylthioethyl, 2- (4'-isopropoxyphenyl) ethyl, and the like.

Among the compounds represented by the general formulas (1), (2) or (3) according to the present invention, A in the general formula represents a group selected from (a), (b) or (e) of the above group I, It is more preferable that A 'represents a group selected from (a'), (b ') or (e') in Group II because the wavelength characteristics are preferable. In addition, the compound in which both A in the said General formula (1) are represented by (a) of the said group I, or a compound represented by all (e) of said group I; A and A 'in the general formula (2) or (3) are compounds represented by (a) and (a') of Group I or (e) and (II) of Group II The compound represented by ') is particularly preferable because it is easy to manufacture.

Moreover, in the (a)-(k) of said group I, and (a ')-(k') of group II, the following are preferable.

Y and Y 'are an alkyl group having 1 to 20 carbon atoms (especially 1 to 10) carbon atoms, an aryl group having 6 to 30 carbon atoms (especially 6 to 10 carbon atoms) or a carbon atom which may be substituted with a hydroxyl group, a halogen atom, a cyano group or a nitro group. It is preferable that they are 7-30 (especially 7-15) arylalkyl group.

It is preferable that ring B and ring B 'are a benzene ring.

It is preferable that r is 0-2. When r is 1 or more, R ¹ is preferably a halogen atom or an alkyl group having 1 to 8 carbon atoms (particularly 1 to 4), a halogen substituted alkyl group, an alkoxy group or a halogen substituted alkoxy group.

R ² and R ^{2 '} are preferably a hydrogen atom, an alkyl group having 1 to 8 carbon atoms (particularly 1 to 4), or an aryl group having 6 to 30 carbon atoms (particularly 6 to 10).

X and X 'are an oxygen atom, a sulfur atom, -CR ⁵¹ R ^52- (in particular, R ⁵¹ and R ⁵² are alkyl groups having 1 to 8 carbon atoms which may be substituted with hydroxyl, halogen, cyano or nitro), or Preference is given to cycloalkane-1,1-diyl groups having 3 to 6 carbon atoms.

As a specific example of the squarylium compound represented by the said General formula (1), (2) or (3) which concerns on this invention, the following compound No. 1-74, the compound No. 101-124, the compound No. 201- 242, but is not limited to these compounds. In addition, compound No.1-75 is a specific example of the said General formula (1), compound No.101-124 is a specific example of the said General formula (2), and compound No.201-242 is the said General formula (3 The specific example of).

[Formula 3-A]

[Formula 3-B]

[Formula 3-C]

[Formula 3-D]

[Formula 3-E]

[Formula 3-F]

[Formula 3-G]

[Formula 3-H]

[Formula 3-I]

[Formula 3-J]

[Formula 3-K]

[Formula 3-L]

[Formula 3-M]

The squarylium compound according to the present invention represented by the general formulas (1), (2) and (3) is not particularly limited in its preparation method, and can be obtained by a method using a well-known general reaction. Is a compound and a square acid derivative which induce a ring structure having a corresponding structure, such as, for example, the routes described in Japanese Patent Application Laid-Open No. 2004-315789 and Japanese Patent Application Laid-Open No. 2007-315789. The method of synthesis | combining by reaction with is mentioned.

The color conversion filter of the present invention is, for example, an image display device such as a liquid crystal display (LCD), a plasma display panel (PDP), an electroluminescent display (ELD), a cathode ray tube display (CRT), a fluorescent display tube, a field emission display, or the like. And lighting devices such as LED lighting and electroluminescent lighting. When used for an image display device, it is possible to correct to a desired color without degrading display brightness, and when used for an illumination device (especially LED lighting), white light which feels more natural can be obtained.

The color conversion filter of the present invention may be the same as a conventional optical filter except that it contains at least one squarylium compound that emits fluorescence, and there is no limitation in the configuration thereof. And various functional layers such as an optical functional layer, a primer layer, an antireflection layer, a hard coat layer, and a lubricating layer, as necessary. In the color conversion filter of the present invention, the squarylium compound that emits fluorescence may be included in any one of the support and the various functional layers, but is preferably contained in the support or the optical functional layer. In addition, the size and shape of the color conversion filter of the present invention are not particularly limited and are appropriately determined depending on the intended use.

The structural example of preferable embodiment of the color conversion filter of this invention is shown to FIG. 1A-(C). For example, the color conversion filter includes a support 100 and an optical functional layer 120 containing a squarylium compound that emits fluorescence, and includes a primer layer 110, an antireflection layer 130, and a hard component as necessary. The coat layer 140, the lubrication layer 150, and the like may be provided. As shown in FIG. 1A, the primer layer 110, the optical function layer 120, the antireflection layer 130, the hard coat layer 140, and the lubrication layer 150 may be laminated on one surface of the support 100. do. Or as shown in FIG. 1B, the primer layer 110, the optical function layer 120, the hard-coat layer 140, and the lubrication layer 150 are laminated | stacked on one surface of a transparent support body, and a primer is put on the other surface. The layer 110, the antireflection layer 130, and the lubrication layer 150 may be laminated. Alternatively, the color conversion filter of the present invention, as shown in Figure 1c, the primer layer 110, the antireflection layer 130 on the surface of the optical functional support 105 containing a squarylium compound for emitting fluorescence according to the present invention ), The hard coat layer 140 and the lubrication layer 150 may be laminated.

As a material of the support body 100, inorganic materials, such as glass, for example; Polyethylene terephthalate, polymethyl methacrylate, polyvinyl butyral, polyvinylpyrrolidone, polyvinyl alcohol, polyvinyl chloride, styrene-butadiene copolymer, polystyrene, polycarbonate, polyamide, ethylene-vinyl acetate copolymer resin, Synthetic polymer materials, such as an epoxy resin, a polyfluorene resin, and a silicone resin, can be used. The support 100 preferably has a transmittance of 80% or more with respect to visible light, and more preferably has a transmittance of 86% or more. It is preferable that the haze of the support body 100 is 2% or less, and it is more preferable that it is 1% or less. It is preferable that the refractive index of the support body 100 is 1.45-1.70. The thickness of the support 100 is appropriately selected depending on the application and the like, and is not particularly limited, but is preferably selected in the range of 10 to 10000 µm.

You may add an infrared absorber, an ultraviolet absorber, inorganic fine particles, etc. to each layer of FIG. In addition, the surface 100 may be subjected to various surface treatments. The surface treatment includes, for example, chemical treatment, mechanical treatment, corona discharge treatment, flame treatment, ultraviolet irradiation treatment, high frequency treatment, glow discharge treatment, active plasma treatment, laser treatment, mixed acid treatment, ozone oxidation treatment, and the like. do.

Moreover, in the optical function layer 120 or the optical function support 105, it is also possible to add the pigment | dye which absorbs the light of another wavelength range further. Although it does not specifically limit as a pigment | dye which absorbs the light of another wavelength range, For example, a cyanine pigment | dye, a pyridine pigment | dye, an oxazine pigment | dye, a coumarin pigment | dye, a coumarin pigment | dye dye, a naphthalimide pigment | dye, a pyrromethene type pigment | dye , Perylene dyes, pyrene dyes, anthracene dyes, styryl dyes, rhodamine dyes, azo dyes, quinone dyes, diketopyrrolopyrrole dyes, iridium complex dyes, europium dyes, naphtholactam dyes Etc. can be mentioned.

As a structure of the optical function layer 120 or the optical function support 105, binder resins, such as a photocurable resin, a thermosetting resin, and a thermoplastic resin, a light stabilizer, a hardening | curing agent, an infrared absorber, an ultraviolet absorber, antioxidant, and an interface as needed. Various additives, such as active agent, antistatic agent, flame retardant, lubricant, heavy metal inert, hydrotalcite, organic carboxylic acid, colorant, processing aid, inorganic additive, filler, clearing agent, nucleating agent, crystallizing agent, can be used.

The optical functional layer 120 or the optical functional support 105 does not have any particular form as long as it contains at least one squarylium compound that emits fluorescence. For example, the squarylium compound is dissolved or dispersed in a binder resin. It may consist of the film obtained from one resin liquid, and may consist of a single film or laminated body which consists only of the squarylium compound which is a fluorescent material. The thickness of the optical function layer 120 and the optical function support 105 is appropriately selected depending on the application, and the like, and is not particularly limited, but the thickness of the optical function layer 120 is in the range of 0.1 to 100 μm, and the optical function support ( The thickness of 105) is preferably selected in the range of 10 to 10000 µm, respectively. Moreover, the squarylium compound which emits the said fluorescence may be contained in a color conversion filter in the form of a filler, sealing agent, adhesive agent, etc.

The manufacturing method of the optical function layer 120 or the optical function support 105 may be, for example, a vapor deposition method, a sputtering method or a solution that is dissolved or dispersed in a solvent, followed by a dip coating method, an air knife coating method, a curtain coating method, a roller coating method, and a wire. And a method of forming a coating film on a port support or a temporary support by a bar coating method, a gravure coating method, a spin coating method or an extrusion coating method.

Although it does not restrict | limit especially as said solvent, For example, water, alcohol type, diol type, ketone type, ester type, ether type, aliphatic or alicyclic hydrocarbon type, aromatic hydrocarbon type, hydrocarbon having a cyano group, halogenated aromatic hydrocarbon type, etc. Can be mentioned.

Alternatively, as a method for manufacturing the optical functional layer 120 or the optical functional support 105, extrusion, cast, or roll molding a mixture containing a squarylium compound that emits fluorescence and a polymer material is carried out to directly form a self-supporting layer. You may form. Polymer materials that can be used include cellulose esters such as diacetyl cellulose, triacetyl cellulose (TAC), propionyl cellulose, butyryl cellulose, acetyl propionyl cellulose and nitrocellulose; Polyamide; Polycarbonate; Polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, poly-1,4-cyclohexanedimethylene terephthalate, polyethylene-1,2-diphenoxyethane-4,4'-dicarboxylate, polybutyl Polyesters such as lenterephthalate; polystyrene; Polyolefins such as polyethylene, polypropylene and polymethylpentene; Acrylic resins such as polymethyl methacrylate; Polycarbonate; Polysulfones; Polyether sulfone; Polyether ketones; Polyetherimide; Polyoxyethylene; Norbornene resins; Ethylene-vinyl acetate copolymer (EVA); Polyvinyl butyral (PVB) and the like.

Or after mixing the squarylium compound which emits fluorescence, a photocurable resin and / or a thermosetting resin, a photoinitiator, and / or a thermosetting agent, it can also be set as a cured film by light irradiation and / or heat processing.

Or when using the color conversion filter of this invention for the use which requires patterning with wet etching, it is manufactured from the composition which consists of a squarylium compound which emits fluorescence, and a photocurable or light-heat combined use type curable resin (resist). can do. In this case, the hardened | cured material of photocurable or light-heat combined use type curable resin (resist) functions as a binder of the color conversion filter after patterning. Moreover, in order to make patterning smooth, it is preferable that the said photocurable or light-heat combined use type curable resin is soluble in an organic solvent or an alkaline solution in an unexposed state. The photocurable or light-heat combined use type curable resin (resist) which can be used specifically, comprises (1) the composition which consists of an acryl-type polyfunctional monomer and oligomer which has two or more acryloyl group and a methacryloyl group, and a photo or thermal polymerization initiator, (2) a composition comprising polyvinyl cinnamic acid ester and a sensitizer, (3) a composition consisting of linear or cyclic olefins and bisazides (nitrile is generated and crosslinks the olefins), and (4) an epoxy group The composition etc. which consist of a monomer and an acid generator are included. It is especially preferable to use the composition which consists of an acryl-type polyfunctional monomer and oligomer of (1), and a light or thermal polymerization initiator. This is because the composition is capable of high definition patterning, and has high reliability such as solvent resistance and heat resistance after polymerization and curing.

In the color conversion filter of the present invention, the amount of the squarylium compound that emits fluorescence is usually within the range of 1 to 10000 mg / m 2 per unit area of the color conversion filter, and preferably within the range of 10 to 3000 mg / m 2. Do. By using it in such a range, while exhibiting sufficient color conversion effect, it exhibits appropriate color conversion efficiency and photoelectric conversion effect in the color conversion light emitting device and photoelectric conversion device of this invention. In order to satisfy the preferable usage-amount per said unit area, although it changes also with the kind etc. of binder resin to be used, For example, the resin liquid mix | blended in the ratio of 0.001-10 mass parts of squarylium compounds which fluoresces a fluorescent substance in 100 mass parts It is preferable to form the optical function layer 120 or the optical function support 105 having the thickness in the above-described preferred range using the?. The amount of the squarylium compound that emits fluorescence is preferably such that the absorbance at the λmax of the color conversion filter is 0.01 to 1.0 as the absorbance.

The anti-reflection layer 130 is a layer for improving the light transmittance by preventing reflection in the color conversion filter of the present invention. The anti-reflection layer 130 may be a low refractive index layer formed of a material having a lower refractive index than the support 100. It is preferable that it is 1.20-1.55, and, as for the refractive index of a low refractive index layer, it is more preferable that it is 1.30-1.50. It is preferable that it is 50-400 nm, and, as for the thickness of a low refractive index layer, it is more preferable that it is 50-200 nm. The low refractive index layer can be formed as a layer made of a fluorine-containing polymer having a low refractive index, a layer obtained by a sol gel method, or a layer containing fine particles. In the layer containing the fine particles, voids can be formed in the low refractive index layer as microvoids between the fine particles or in the fine particles. It is preferable that the layer containing microparticles | fine-particles has a porosity of 3-50 volume%, and it is more preferable to have a porosity of 5-35 volume%.

By forming the antireflection layer 130 into a laminate of one or a plurality of low refractive index layers and one or a plurality of medium and high refractive index layers, light reflection in a wider wavelength range can be prevented. It is preferable that it is 1.65-2.40, and, as for the refractive index of a high refractive index layer, it is more preferable that it is 1.70-2.20. The refractive index of the medium refractive index layer is adjusted to be the intermediate value between the refractive index of the low refractive index layer and the refractive index of the high refractive index layer. It is preferable that it is 1.50-1.90, and, as for the refractive index of a medium refractive index layer, it is more preferable that it is 1.55-1.70. It is preferable that the thickness of a medium and high refractive index layer is 5 nm-100 micrometers, It is more preferable that it is 10 nm-10 micrometers, It is most preferable that it is 30 nm-1 micrometer. The haze of the medium-high refractive index layer is preferably 5% or less, more preferably 3% or less, and most preferably 1% or less, except for the case of providing the antiglare function described later.

The medium and high refractive index layer can be formed using a polymer binder having a relatively high refractive index. Examples of high refractive index polymers include polystyrene, styrene copolymers, polycarbonates, melamine resins, phenol resins, epoxy resins, and polyurethanes obtained by reaction of cyclic (alicyclic or aromatic) isocyanates with polyols. Polymers having other cyclic (aromatic, heterocyclic or alicyclic) groups or polymers having halogen atoms other than fluorine as substituents also have high refractive index. You may form a polymer by the polymerization reaction of the monomer which introduced the double bond and enabled radical hardening.

In order to obtain a higher refractive index, the inorganic fine particles may be dispersed in the polymer binder. It is preferable that the refractive index of the inorganic fine particle to disperse is 1.80-2.80. The inorganic fine particles are formed of oxides or sulfides of metals such as titanium dioxide (e.g., rutile, rutile / anatase mixed crystals, anatase, amorphous structures), tin oxide, indium oxide, zinc oxide, zirconium oxide, and zinc sulfide. It is preferable. Titanium oxide, tin oxide and indium oxide are particularly preferred. The inorganic fine particles mainly contain oxides or sulfides of these metals, and may further contain other elements. A main component means the component with most content (weight%) among the components which comprise particle | grains. Examples of other elements include Ti, Zr, Sn, Sb, Cu, Fe, Mn, Pb, Cd, As, Cr, Hg, Zn, Al, Mg, Si, P and S. Or an inorganic material which can be dispersed in a solvent in the form of a film, or is itself a liquid, such as alkoxides of various elements, salts of organic acids, coordination compounds (e.g., chelate compounds), active inorganic polymers It is also possible to form a medium and high refractive index layer using.

The anti-reflection layer 130 may give an antiglare function (a function of scattering incident light from the surface to prevent the landscape around the film from shining on the surface). For example, fine irregularities are formed on the surface (for example, roughened primer layer 110, etc.) on which the anti-reflection layer 130 is formed, or the surface of the anti-reflection layer 130 is embossed or the like. The antiglare function can be imparted by forming irregularities in the grooves. The antireflection layer 130 having an antiglare function generally has a haze of 3 to 30%.

The hard coat layer 140 is a layer for protecting the layer (the optical functional layer 120 and / or the anti-reflection layer 130) formed thereunder, and is formed of a material having a higher hardness than the support 100. It is preferable that the hard-coat layer 140 contains the polymer which is bridge | crosslinking. A hard coat layer can be formed using an acryl-type, urethane type, an epoxy polymer, an oligomer, or a monomer (for example, ultraviolet curable resin). The hard coat layer 140 may be formed of a silica-based material.

You may form the lubrication layer 150 on the surface of the color conversion filter of this invention. The lubrication layer 150 has a function of improving slip resistance by providing slipperiness to the color conversion filter surface. The lubrication layer 150 may be formed using polyorganosiloxane (eg, silicone oil), natural wax, petroleum wax, higher fatty acid metal salt, fluorine-based lubricant or derivatives thereof. It is preferable that the thickness of the lubrication layer 150 is 2-20 nm.

The primer layer 110, the antireflection layer 130, the hard coat layer 140, and the lubrication layer 150 may be a dip coating method, an air knife coating method, a curtain coating method, a roller coating method, a wire bar coating method, It may be formed by any coating method known in the art, such as a gravure coating method and an extrusion coating method. When the hard coat layer 140 is formed of a silica-based material, the hard coat layer 140 may be formed using any film formation technique known in the art, such as deposition, sputtering, CVD, and laser abrasion. do.

Each component layer of a color conversion filter may be formed one by one according to the lamination order, or two or more layers may be formed by a simultaneous coating method.

Next, a color conversion light emitting device using the color conversion filter of the present invention will be described.

The color conversion light emitting device of the present invention is not particularly limited as long as it has a light emitting portion (light source) and the color conversion filter of the present invention as a color conversion portion, and can be configured according to a conventional color conversion light emitting device.

2A to 2C are schematic cross-sectional views each showing preferred embodiments of a ballistic type LED device that is an example of a color conversion light emitting device using the color conversion filter of the present invention. The example of the color conversion light emitting device shown to FIGS. 2A-C is used for the illumination apparatus etc. which made LED the light source. The leads 2 and 3 are made of copper, a copper alloy, or the like having excellent thermal conductivity and conductivity. The wire 4 connects the leads 2 and 3 to the LED element 6, and gold is used. As the LED element 6, a known one can be used. For example, GaN system, InGaN system, AlP system, AlInGaN system etc. are mentioned as an element which emits blue light.

As the sealing resin 1 and / or the sealing resin 5, an epoxy resin, a silicone resin, etc. are used. Phosphors are mixed in the encapsulating resin 5, and an inorganic compound that emits fluorescence such as yellow, yellow + red, green + red and the like is used as the phosphor.

In the ballistic type LED device of FIG. 2A, a squarylium compound that emits fluorescence is mixed in the encapsulating resin 1 and / or the encapsulating resin 5. That is, in the ballistic type LED device of Fig. 2A, the encapsulating resin 1 and / or the encapsulating resin 5 portion are the color conversion filter of the present invention.

Moreover, in a ballistic type LED device, you may provide a color conversion layer. 2B and C show an example of a ballistic type LED device provided with a color conversion layer. In FIG. 2B, a color conversion layer 7 is provided, and in FIG. 2C, a color conversion layer 8 is provided. These color conversion layers are the color conversion filters of the present invention, and are made of, for example, the same manufacturing method and material as those of the color conversion filter described in FIG. 1, and may have various functional layers as necessary.

The color conversion light-emitting device of this invention is a squaryl which radiates the fluorescence which concerns on this invention to at least one of the above-mentioned sealing resin (1), sealing resin (5), color conversion layer (7), and color conversion layer (8). What is necessary is just to use a cerium compound.

Moreover, as another example of the color conversion light emitting device using the color conversion filter of this invention, the example of the color conversion light emitting device (lighting device) which arranged the LED chip in FIGS. 2D-F is shown. For example, in the color conversion light emitting device of FIG. 2D, the LED chip 330 is provided on the substrate 300 (but may be arbitrarily installed in a plane as well as in a straight shape), and is sealed between the opposing substrate 320. The resin 310 was sealed. In the color conversion light emitting device of FIG. 2D, a squarylium compound for emitting fluorescence according to the present invention is mixed in the encapsulating resin 310. That is, in the color conversion light emitting device of Fig. 2D, the encapsulation resin 310 portion is the color conversion filter of the present invention.

In the color conversion light emitting device of FIGS. 2E and 2F, a color conversion layer 340 containing the squarylium compound is provided on or under the counter substrate to function. That is, in the color conversion light emitting device of FIGS. 2E and 2F, the color conversion layer 340 is the color conversion filter of the present invention. In the color conversion light emitting device of FIGS. 2E and 2F, the squarylium compound may also be used for the encapsulating resin 310.

Moreover, as another example of the color conversion light emitting device using the color conversion filter of this invention, the color conversion light emitting device for color displays is shown in FIG. In the color conversion light emitting device shown in FIG. 3, the light emitting layer 40 is provided on the support 50. Although the method of making the light emitting layer 40 emit light is not limited. For example, in the case of an EL (electroluminescent) element, the light emitting layer can be made to emit light by passing an electric current between the electrodes.

In addition, by providing the red, green, and blue conversion layers 20R, 20G, and 20B on the light emitting layer 40, the light emitted from the light emitting layer 40 can be color converted. At least one of these color conversion layers is the color conversion filter of the present invention. The said color conversion filter can be suitably set to the color conversion layers 20R, 20G, and 20B of red, green, and blue according to the wavelength after conversion. As said color conversion layer, the color conversion filter which consists of a film obtained from the resin liquid which melt | dissolved or disperse | distributed the squarylium compound which emits fluorescence in binder resin, for example can be employ | adopted.

Moreover, the color filter layers 10R, 10G, and 10B of red, green, and blue can be provided suitably. These color filter layers are provided as necessary to optimize the color coordinates or color purity of the light converted by the color conversion layers 20R, 20G, and 20B of red, green, and blue.

As a material of the support body 50, inorganic materials, such as glass, and synthetic polymer material which were illustrated as a material of the support body 100 in an optical film, for example can be used. In order to produce the electrode which makes the light emitting layer 40 emit light suitably, glass is preferable as a support body in which an electrode is easily formed.

The color filter layers 10R, 10G, and 10B of each color have a function of transmitting only light in a desired wavelength range. The color filter layers 10R, 10G, and 10B of each color block light from a light source that has not been wavelength-converted by the color conversion layers 20R, 20G, and 20B, and are further applied to the color conversion layers 20R, 20G, and 20B. This is effective for improving the color purity of the light converted by the wavelength distribution. These color filter layers may be formed using, for example, a color filter material for a liquid crystal display.

The color conversion light emitting device for color display can be formed by making RGB color conversion light emitting device shown in FIG. 3 into a set of pixels, and arrange | positioning a some pixel in matrix form on a support body. The desired pattern of the color conversion layer depends on the application used. You may make red, green, and blue rectangular or circular, or the area | region of the intermediate shape into one set, and create it in the matrix form on the transparent support whole surface. Alternatively, two types of color conversion layers arranged at appropriate area ratios divided into minute zones may be used to express a single color that cannot be achieved with a single color conversion layer.

Although the case of providing the color conversion layer of each RGB color was shown in the example of FIG. 3, when using the light emitting element which emits blue light as a light source, you may use only a color filter layer, without using a color conversion layer with respect to blue.

As the light emitting portion, any light source that emits cyan light in the visible region, preferably in the near ultraviolet, in the near ultraviolet can be used. Examples of such a light source include an organic EL light emitting element, a plasma light emitting element, a cold cathode tube, a discharge lamp (such as a high voltage and ultra high pressure mercury lamp and a xenon lamp), a light emitting diode, and the like.

In the color conversion light emitting device of the present invention, when providing a color filter layer as shown in Fig. 3, the light emitting portion is disposed next to the color conversion layer.

In the color conversion light emitting device of the present invention, when the color conversion filter (not having the color filter layer) shown in FIG. The color conversion filter may be directly laminated on the surface of the light source.

Next, a color conversion light emitting device using the color conversion filter of the present invention will be described.

The photoelectric conversion device of this invention will not be specifically limited if it has a photoelectric conversion element and the color conversion filter of this invention, It can be set as the structure according to the conventional photoelectric conversion device. The solar cell as an example of the photoelectric conversion device of this invention is shown in FIG. In the solar cell of FIG. 4, the surface sheet layer 200, the transparent substrate 210, the filler layer 220, the light collecting film 230, and the backsheet are disposed around the device so that the photoelectric conversion device 240 can be generated with high efficiency. One or more members selected in layer 250 may be color converted filter. That is, by including the squarylium compound which emits fluorescence in the peripheral member of a photoelectric conversion element, the said peripheral member can be used as the color conversion filter of this invention. In addition to the above-described layers shown in FIG. 4, a color conversion filter layer may be separately formed as the color conversion filter of the present invention, for example, by using an adhesive containing a squarylium compound that emits fluorescence between the layers. The same effect can be obtained by forming a conversion filter layer.

Although the photoelectric conversion device of this invention is not specifically limited, For example, Silicon type solar cells, such as a single crystal type, a polycrystal type, an amorphous silicon type; Compound solar cells such as GaAs, CIS, Cu ₂ ZnSnS ₄ and CdTe-CdS; Solar cells, such as organic solar cells, such as a dye-sensitized type and an organic thin film type, are mentioned.

Example

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the following examples and the like at all.

[Examples 1-12 and Comparative Example 1]

In a toluene solution of 25 wt% polymethyl methacrylate prepared in advance, the test compound described in [Table 1] was dissolved so that the absorbance at? Max was 0.5, and 100 µm polyethylene terephthalate (RDS30 RDS Webster, NY) was used. PET) After coating on a film substrate, it heated in oven for 10 minutes on 100 degreeC conditions, and obtained the color conversion filter of this invention.

About the obtained color conversion filter, (lambda) max of each film was measured as excitation light using the spectrophotometer U-3010 by Hitachi High-Technologies Corporation, and the fluorescence spectrum using the spectrophotometer F4500 by Hitachi Hi-Technologies Corporation. Quantum efficiency was measured from the area ratio by measuring the vicinity of (lambda) max of each film as excitation light using absolute PL quantum yield measuring apparatus C9920-02G by Hamamatsu Photonics. The results are shown in Table 1 below.

As mentioned above, since the color conversion filter of Examples 1-12 has color conversion capability, it is clear that it is suitable for a color conversion light emitting device and a photoelectric conversion device. In particular, the color conversion filters of Examples 1 to 9 and 12 absorb the wavelength light of 570 to 600 nm in LED lighting, and convert the wavelength to 600 to 700 nm which is preferable for illumination, and therefore are preferable as color conversion filters for LED lighting.

1 bag of resin
2 lead
3 lead
4 wire
5 bag resin
6 LED device
7 color conversion layer
8 color conversion layer
10R red filter layer
10G green filter layer
10B blue filter layer
20R red conversion layer
20G green conversion layer
20B blue conversion layer
30 black masks
40 light emitting layer
50 support
100 support
105 Optical Function Support
110 primer layer
120 optical function layer
130 anti-reflective layer
140 hard coat floors
150 lubricating layer
200 surface sheet layers
210 transparent substrate
220 Filler Layer
230 condensing film
240 photoelectric conversion element
250 backsheet layers
300 substrates
310 bags of resin
320 facing substrate
330 LED Chip
340 color conversion layer

Claims (5)

A color conversion filter comprising at least one squarylium pigment which emits fluorescence, and has a wavelength conversion capability. The method of claim 1,
The color conversion filter whose said squarylium pigment | dye is a compound represented by following General formula (1), (2) or (3).
[Formula 1]

(In formula, A represents group chosen from (a)-(k) of following group I, A 'represents group chosen from (a')-(k ') of following group II.)
(2)

In the formula, Ring B and Ring B 'represent a benzene ring, a naphthalene ring, a phenanthrene ring or a pyridine ring,
R ¹ and R ^{1 '} are a halogen atom, a nitro group, a cyano group, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, an alkyl group having 1 to 8 carbon atoms, a halogen substituted alkyl group having 1 to 8 carbon atoms , An alkoxy group having 1 to 8 carbon atoms, a halogen substituted alkoxy group having 1 to 8 carbon atoms, or an ether group having 2 to 8 carbon atoms,
R ² and R ^{2 '} represent a hydrogen atom, a halogen atom, an aryl group having 6 to 30 carbon atoms, an arylalkyl group having 7 to 30 carbon atoms, or an alkyl group having 1 to 8 carbon atoms,
R ³ to R ⁹ and R ^{3 '} to R ^9' represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms or a group forming a condensed ring with an adjacent substituent,
X and X 'represent an oxygen atom, a sulfur atom, a selenium atom, -CR ⁵¹ R ^52- , a cycloalkane-1,1-diyl group having 3 to 6 carbon atoms, -NH- or -NY ^2- ,
R ⁵¹ and R ⁵² represent an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms or an arylalkyl group having 7 to 30 carbon atoms, or a hydrogen atom which may be substituted with a hydroxyl group, a halogen atom, a cyano group or a nitro group ,
Y, Y 'and Y ² are a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms or an aryl having 7 to 30 carbon atoms which may be substituted with a hydroxyl group, a halogen atom, a cyano group or a nitro group. An alkyl group, and the methylene group in the alkyl group and the arylalkyl group in Y, Y 'and Y ² is -O-, -S-, -CO-, -COO-, -OCO-, -SO _2- , -NH-,- May be substituted with CONH-, -NHCO-, -N = CH- or -CH = CH-,
r and r 'represent the number which can be substituted in 0 or (a)-(k) or (a')-(k ').) A color conversion light emitting device comprising a light emitting unit and the color conversion filter according to claim 1. The method of claim 3,
A color conversion light emitting device wherein said light emitting portion is an LED element. The photoelectric conversion device containing a photoelectric conversion element and the color conversion filter of Claim 1 or 2.

Images